@charset "UTF-8";
:root{font-family:"Segoe UI","Microsoft YaHei",sans-serif;color:#263e36;background:#e8ece9;font-synthesis:none;--ink:#263e36;--muted:#728078;--line:#d8dfd9;--accent:#355c4d;--paper:rgba(253,254,252,.91)}
*{box-sizing:border-box}body{margin:0;overflow:hidden}button,select,input{font:inherit}button,select{color:inherit}button{cursor:pointer;border:1px solid transparent;border-radius:8px;background:#f5f7f4;min-height:36px;padding:8px 13px;font-size:12px;transition:background .16s,box-shadow .16s}button:hover{background:#e5ece5}button:disabled{opacity:.4;cursor:default}button:focus-visible,select:focus-visible,input:focus-visible{outline:2px solid #599b7f;outline-offset:3px}button.primary{background:var(--accent);color:white}button.primary:hover{background:#244937}select{background:transparent;border:1px solid var(--line);padding:9px;border-radius:7px;max-width:100%;font-size:12px}h1,h2,h3,p{margin:0}h2{font-size:15px;font-weight:600}a{color:inherit}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}[hidden]{display:none!important}
.masthead{height:86px;padding:0 32px;display:flex;align-items:center;justify-content:space-between;position:relative;z-index:20;border-bottom:1px solid rgba(71,92,78,.12);background:#f5f7f3}.brand{text-decoration:none;display:flex;gap:11px;align-items:center;font-weight:650;font-size:18px;letter-spacing:1px}.brand svg{width:35px;height:35px;stroke:var(--accent);stroke-width:2;fill:none}.brand small{display:block;font-size:10px;letter-spacing:2px;color:var(--muted);margin-top:5px;font-weight:400}.mode-switch{display:flex;background:#e4e9e3;padding:4px;border-radius:11px;gap:4px;position:absolute;left:50%;transform:translateX(-50%)}.mode-switch button{background:transparent;font-size:13px;padding:11px 27px}.mode-switch button.active{background:#fff;box-shadow:0 2px 8px #24413212;color:#214e3d}.header-end{display:flex;align-items:center;gap:14px}.model-menu select{border:0;font-size:13px}.icon-button{width:34px;height:34px;padding:0;border-radius:50%;border:1px solid var(--line);background:transparent}.panel{background:var(--paper);backdrop-filter:blur(18px);border:1px solid rgba(255,255,255,.9);box-shadow:0 12px 36px #20382e0b;border-radius:14px}
#experience{height:calc(100dvh - 86px);position:relative;background:radial-gradient(ellipse at 53% 38%,#f6f7f2 0%,#e9ede7 42%,#dbe3dc 100%);isolation:isolate}#viewport{position:absolute;inset:0}canvas{display:block;width:100%;height:100%;touch-action:none}.model-intro{position:absolute;left:5%;top:17%;pointer-events:none;max-width:280px}.collection{font-size:11px;letter-spacing:4px;color:#6b7e71}.model-intro h1{font-family:"STSong","SimSun",serif;font-weight:500;font-size:clamp(34px,3.8vw,60px);letter-spacing:3px;margin:18px 0 24px;line-height:1.14}.model-intro p{font-size:13px;line-height:2.2;color:#718174}.model-facts{display:flex;gap:32px;margin:35px 0;color:#718174;font-size:10px}.model-facts b{display:block;font-family:Georgia,serif;font-size:30px;font-weight:400;color:#344f3f;margin-bottom:6px}.model-intro button{pointer-events:auto;font-size:13px;padding:13px 22px;min-width:150px;display:flex;justify-content:space-between;gap:20px}.view-tools{position:absolute;bottom:35px;left:50%;transform:translateX(-50%);display:flex;gap:2px;padding:5px}.view-tools button{display:flex;align-items:center;gap:7px;background:none;padding:10px 15px}.view-tools button:hover,.view-tools button[aria-pressed=true]{background:#e9eee7}.view-tools svg{width:17px;height:17px;stroke:currentColor;stroke-width:1.4;fill:none}.interaction-hint{position:absolute;bottom:18px;left:30px;font-size:10px;color:#7b897c;pointer-events:none}.model-badge{position:absolute;right:32px;bottom:22px;display:flex;gap:8px;align-items:center;font-size:10px;color:#617465}.status-dot{width:5px;height:5px;background:#658c72;border-radius:100%}
.sheets-panel,.guide-panel,.assembly-transport,.mobile-panels{display:none}.panel-heading{display:flex;align-items:center;justify-content:space-between;gap:9px}.eyebrow{display:block;font-size:10px;color:#8a988e;margin-bottom:6px}.tiny{font-size:10px;padding:5px 8px;min-height:28px}.tiny.active{background:#dce9de;color:#2f6145}.panel-help{font-size:10px;color:var(--muted);line-height:1.7;margin:12px 0 16px}.muted{color:var(--muted);font-size:10px}
body[data-mode=assembly] .model-intro{display:none}body[data-mode=assembly] .sheets-panel{display:flex;flex-direction:column;position:absolute;top:22px;left:22px;bottom:116px;width:232px;padding:18px 14px 8px}#sheets{overflow-y:auto;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:#bdcbbb transparent;flex:1;padding:2px 4px 14px}.sheet-card{display:block;width:100%;padding:10px 7px 7px;margin-bottom:14px;background:#f2f2e8;border:1px solid #d8decd;box-shadow:0 3px 10px #3b4b3307;border-radius:7px;min-height:153px;text-align:left}.sheet-card.has-needed{border-color:#58956e;box-shadow:0 0 0 2px #53946620}.sheet-card-title{display:flex;justify-content:space-between;align-items:center;font-size:11px;margin-bottom:8px}.sheet-card-title small{color:#8a947d;font-size:9px}.sheet-card svg{width:100%;display:block}svg [data-part]{cursor:pointer}svg [data-part].taken{opacity:.10}svg .needed-edge{stroke:transparent;stroke-width:2.5}svg .needed .needed-edge{stroke:#35a466;opacity:var(--need-opacity)}svg .picked .needed-edge{stroke:#167a54;stroke-width:3}
body[data-mode=assembly] .guide-panel{display:block;position:absolute;right:22px;top:22px;width:278px;padding:16px;max-height:calc(100% - 150px);overflow-y:auto;scrollbar-width:thin}#guide-view{height:165px;margin:12px -4px 10px;background:#edf1eb;border-radius:9px;overflow:hidden}.guide-number{font-size:21px;font-weight:650;color:#315d42;line-height:1.4;word-break:break-word}.guide-copy h3{font-size:12px;font-weight:500;margin:5px 0}.guide-location{font-size:10px;color:#879382;margin:6px 0}.guide-copy p{font-size:11px;line-height:1.8;color:#68796b;max-height:110px;overflow:auto;white-space:pre-line}.guide-controls{display:flex;gap:4px;margin-top:12px;flex-wrap:wrap}.guide-controls button{padding:5px 8px;min-height:29px;font-size:10px}.group-selector{border-top:1px solid #e3e8df;margin-top:14px;padding-top:12px}.group-selector label{font-size:10px;display:block;margin-bottom:7px;color:#74826f}.group-selector select{width:100%;font-size:11px}
body[data-mode=assembly] #viewport{left:254px;right:300px;bottom:100px}body[data-mode=assembly] .view-tools{bottom:120px;padding:2px}body[data-mode=assembly] .view-tools button{font-size:10px;padding:8px 10px}body[data-mode=assembly] .assembly-transport{display:flex;position:absolute;bottom:39px;left:22px;right:22px;align-items:center;gap:12px;padding:12px 16px;border-radius:12px}input[type=range]{accent-color:#527b5c;min-width:60px;flex:1;cursor:pointer;height:4px}#progress-label{font-size:11px;min-width:65px;text-align:center;font-variant-numeric:tabular-nums}#speed{border:0}body[data-mode=assembly] .interaction-hint{bottom:15px}.selection>div:first-child{display:flex;gap:10px;align-items:baseline;margin-bottom:10px}.selection strong{font-size:14px}.selection span{font-size:11px;max-width:240px}.selection-actions{display:flex;gap:6px}.selection-actions button{font-size:11px;padding:7px 9px}
.loading{position:fixed;inset:0;z-index:100;display:grid;place-content:center;text-align:center;background:#eef1ec;transition:opacity .5s}.loading.ready{opacity:0;pointer-events:none}.loading-mark{font-family:"STSong","SimSun",serif;font-size:44px;color:#587762;margin-bottom:24px}.loading h2{font-size:17px;font-weight:400}.loading p{font-size:11px;color:#87917f;margin:14px 0 20px}.load-track{height:2px;background:#dae1d6;width:220px;overflow:hidden}.load-track i{display:block;height:100%;background:#527a5c;width:10%;transition:width .3s}#asset-status{position:fixed;top:93px;left:50%;transform:translateX(-50%);z-index:22;font-size:10px;background:#f7faf5d9;padding:7px 12px;border-radius:20px;color:#60745e}#toast{position:fixed;bottom:130px;left:50%;transform:translate(-50%,15px);opacity:0;pointer-events:none;background:#274d3fec;color:#fff;padding:12px 20px;border-radius:10px;font-size:12px;z-index:60;transition:.2s;max-width:85vw}#toast.visible{transform:translate(-50%,0);opacity:1}
dialog{border:1px solid #e2e8df;border-radius:16px;padding:20px;background:#f8faf5;color:var(--ink);width:min(900px,93vw);max-height:90dvh;box-shadow:0 30px 100px #183b3633}dialog::backdrop{background:#1d393d55;backdrop-filter:blur(6px)}.dialog-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.dialog-head button{font-size:22px;padding:0;width:36px;height:36px}.dialog-footer{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:16px;font-size:12px}#sheet-large{max-height:65dvh;overflow:auto}#sheet-large svg{display:block;width:100%;min-width:400px}#help-dialog{max-width:520px}.help-content p{font-size:13px;line-height:1.9;margin-bottom:18px;color:#627361}.help-content b{color:#2e4d3b;font-weight:600}
@media(min-width:1500px){.model-intro{left:7%;top:22%}body[data-mode=preview] #viewport{left:180px;right:20px}.sheets-panel{width:250px!important}.guide-panel{width:300px!important}body[data-mode=assembly] #viewport{left:275px;right:320px}}
@media(max-width:1100px){.masthead{padding:0 20px}.model-intro{left:4%;top:12%;max-width:210px}.model-intro h1{font-size:38px}.model-intro p{font-size:11px}.model-facts{gap:22px}.sheets-panel{width:190px!important}.guide-panel{width:230px!important}body[data-mode=assembly] #viewport{left:210px;right:250px}#guide-view{height:135px}.guide-copy p{max-height:75px}.view-tools span{display:none}}
@media(max-width:760px){.masthead{height:112px;padding:14px 18px;align-items:flex-start}.brand{font-size:15px}.brand svg{width:28px;height:28px}.brand small{font-size:8px;letter-spacing:1px}.header-end{gap:5px}.model-menu select{font-size:11px;max-width:130px}.mode-switch{top:65px;padding:3px}.mode-switch button{font-size:12px;padding:8px 25px;min-height:30px}#experience{height:calc(100dvh - 112px)}.model-intro{left:24px;top:25px;max-width:100%;pointer-events:none}.collection{font-size:9px;letter-spacing:2px}.model-intro h1{font-size:30px;margin:8px 0}.model-intro p,.model-facts{display:none}.model-intro button{margin-top:10px;padding:8px 12px;font-size:11px;min-width:110px;min-height:30px}.view-tools{bottom:41px;white-space:nowrap}.view-tools button{padding:9px 14px}.interaction-hint{left:18px;bottom:15px;font-size:8px}.model-badge{right:15px;bottom:15px;font-size:8px}body[data-mode=preview] #viewport{top:70px;bottom:70px}body[data-mode=assembly] #viewport{left:0;right:0;top:0;bottom:135px}body[data-mode=assembly] .sheets-panel,body[data-mode=assembly] .guide-panel{display:none;top:auto;bottom:130px;left:12px;right:12px;width:auto!important;max-height:55dvh;z-index:30;box-shadow:0 12px 80px #24433125}body[data-mode=assembly].show-sheets .sheets-panel{display:flex;height:50dvh}body[data-mode=assembly].show-guide .guide-panel{display:block}.mobile-panels{display:flex;position:absolute;bottom:92px;left:15px;gap:5px}body[data-mode=preview] .mobile-panels{display:none}.mobile-panels button{background:#f8faf5;border:1px solid #dce3d7;font-size:10px;min-height:28px}.assembly-transport{bottom:10px!important;left:10px!important;right:10px!important;gap:6px!important;padding:9px!important;flex-wrap:wrap}.assembly-transport button{font-size:10px;min-height:30px;padding:6px 9px}#progress{order:5;flex-basis:65%}#progress-label{order:6;min-width:60px}#speed{margin-left:auto;font-size:10px}body[data-mode=assembly] .interaction-hint,body[data-mode=assembly] .model-badge{display:none}body[data-mode=assembly] .view-tools{bottom:95px;left:auto;right:15px;transform:none}.view-tools button{padding:6px 9px}.selection{bottom:145px;width:calc(100% - 30px);max-width:450px;z-index:35}.selection-actions{flex-wrap:wrap}.selection span{max-width:190px}.panel-heading h2{font-size:13px}#guide-view{height:125px}#sheet-large svg{min-width:530px}#asset-status{top:116px;width:max-content;max-width:90vw}}
.mode-switch button{white-space:nowrap;flex-shrink:0}body[data-mode=preview] #viewport{bottom:80px}
@media(max-width:760px){.mode-switch{min-width:220px;justify-content:center}body[data-mode=preview] #viewport{bottom:70px}}
@media(prefers-reduced-motion:reduce){*{transition:none!important;scroll-behavior:auto!important}}